There is a very good possibility the supposed Geologist is the one that committed the fraud against the company.
They could have been contacted by someone from a third party claiming to be Graig/Greg. Without checking any further, the company hired the gentleman on the spot. It could have easily been the gentleman committing the fraud on the company. Very possible.
Someone of a friend of a friend scenario.
How do most folks get work these days if they are freelance? Word of mouth, usually through friends or acquaintances.
They could have easily met the Graig/Greg, guy claiming to be as such. He performed the test or hired out a third party crew to perform the test using their expertise. Very possible.
How does the company get around that issue?
Very easily, hire a new Geologist to file a new report. They hire a new Geologist and if they get the same results, I will be fine with it.
I really appreciate your concern. I will wait until I hear from the company.